USS Monssen (DD-798) was a Fletcher-class destroyer of the United States Navy, the second Navy ship named for Lieutenant Mons Monssen (1867–1930), who was awarded the Medal of Honor for putting out a fire in a magazine on Missouri. Monssen was laid down 1 June 1943 by the Bethlehem Shipbuilding Corporation's Bethlehem Mariners Harbor, Staten Island, New York; launched 30 October 1943; sponsored by Mrs. Mons Monssen; and commissioned 14 February 1944.